APS Payroll (Automatic Payroll Systems, Inc.) is a cloud-based payroll and HR technology company founded in 1996 in Shreveport, Louisiana, originally as a payroll and tax compliance services firm before launching web-based payroll processing software in 2004. It now serves mid-market clients nationally with attendance, recruiting, onboarding, and ACA compliance tools, maintaining about a 98% customer retention rate with 51-200 employees.